* {
  padding: 0;
  margin: 0;
  list-style: none;
  box-sizing: border-box;
}

i {
  font-style: normal;
}

a {
  text-decoration: none;
  display: block;
}

img {
  display: block;
}

html, .container,
body {
  height: 100%;
  width: 100%;
}

.container {
  background: #f5f5f5;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  background: url();
}

header {
  background: red;
  width: 100%;
}

main {
  background: yellow;
}

footer {
  background: blue;
}
